My friend use to developed 2-tier application which application connect directly to database, now he need to move to 3-tier application but he has issue about speed of the application. This new application need to generate a lot of reports at client side so he worried about speed of this process which need to call to business layer to qu...
I recently became a part of the team of developers writing our "flagship" product. Its primarily a read intensive web app (asp.net(c#) and oracle) implemented in an N-tier system. Most of the writes in the DB are done through external services (not through the webapp). Instead of scheduling normal batch jobs in the DB for data aggrega...
Using C#, asp.net 3.5, SqlServer 2005, Trying to incorporate some inversion of control together with 3-tier architecture into my current assignment. Don’t know enough to know if this is a great idea or an incredibly dumb one: I have created a User Interface Layer, a Business Layer, and a Data Layer. The UI collects 4 values, News a...
Hi, This is a bit of conceptual questions but I think it’s the right place to ask it. i am working with NHibernate for some time but I find it difficult to use the collections within the POCO objects 1. I think the proxy concept is nice but when you want o use it in multi tier architecture it become a challenge. 2. I want to add a busin...
Can you recommend a good Entity Framework book? I'm interested in using Entity Framework in a layered application so I would like a book that deals with such a scenario. ...
I have a 3 tiered app: 1st layer: SQL DB. 2nd layer: App Sever (dotnet) 3rd layer: smart wpf client. I'm using NHibarnate (fluent) as the data source for the application server layer (App server- 2nd layer talks to DB using NH) Application layer talks to the client using WCF. Do I benefit anything from using NH - as WCF doesn't suppo...
I need to integrate WFS-T (Web Feature Service-Transactional) in my 3-tier .net application. Not sure about the best practice to do such task, so I would appreciate any help... ...
HTML: <table id="table-1"> <tr> <td> <table> <tr> <td>content</td> <tr> </table> </td> <td>Content</td> </tr> </table> Is it possible to addclass 'td-1' to ONLY first-level TD's of #table-1 and not all? Thanks ...
Hi, When creating an n-tier solution, I don't want to expose my business objects, but use DTO's instead of this. On the other side, I don't want to doubly define objects and write copy-code all the time. Now my idea would be to write DTOs that contain all necessary fields and properties, but no logic (only state). Then I would derive ...
Hi, I have a windows application that has its business logic layer implemented as a WCF service. This service is currently hosted on IIS. I wanted to know that if there's a way where I could optionally run the application in standalone mode when a service isn't available/feasible. ...
I am developing application in N-Tier Architecture. as we all know that we need to implement transactions while insert/update/delete operation. please tell me how to use transaction in c#.net in N-Tier architecture. my architecture is like this Applicationform->middle_Layre->Factory->DataAccessLayre->StoredProcedure->Table in application...
After spending a couple months studying DDD methodology, I've now began to apply these concepts into actual products at my company. In fact, I've been tasked with creating a suitable and maintainable architecture for future development. We have decided to make use of the following technologies: EF4 (really v2), Unity The amount of inf...
I am a fairly rookie programmer who is trying to learn the basics of n-layered architecture (DAL, BLL, UI). The application I am programming is a single tier, 3-layer application written in VB.NET (.Net 3.5). Layers as follows: DAL BLL UI COMMON - contains DTO's right now. I am having trouble determining what to pass between my BL...
I'm looking for opinions on best practices with regards to passing entities beyond assembly boundaries. I'm using Linq-To-SQL, but the same question would apply to Entity Framework, NHibernate, etc. I have an assembly that I want to reuse in multiple projects. In it there are several entities which I have so far kept internal, however I...
Hello all, im trying to test and then implement LINQ 2 SQL as my Data Access to my N-Tier Application, as i read some info today, i added to my database a DateTime column as this reflected in my L2S Designer i changed the TimeStamp property of each "column" in the designer to true and this forced AutoGenerated Value to true as well. But ...
I'm trying to figure out how to share my entities between the data, business, and UI tiers. Is it best to create a separate project for these entities that will be referenced by all the tiers? What about Enums and custom exceptions? I have some enums used only by the UI project, and some that are used by the Business. Does this mean ...
Ok this one is might not have a straight forward answer but lets see. I am trying to design a DAL that will sit on the network and serve EF objects to developers who are writing clients that need to use our database. For example: The DAL has some EF objects called PERSON and DEPARTMENT. A developer wants to write a client that can ...
First of all i will describe current state: Server consists of several WCF services, hosted in one or several win services on diffirent machines. Service responsible for recieving data from diffirent devices. Communication with devices is implemented using sockets. Service instance mode - singleton. Data broker service - respons...
I usually name by classes in the Business project as Manager.cs, like BaseManager.cs, CommentsManager.cs, ProfileManager.cs, etc... How do you name your classes in the DataAccess project? Do you call it CommentsDA, CommentsDB, or what? Just curious...BTW, I'm using .NET C#. ...
I'm splitting up an N-tier stack to allow independent scaling of the tiers, better deployment independence, and I'd like to know what people are currently choosing for service-boundary communication technologies. The service itself and all of the "clients" to the service will have access to one another over an internal network and are c...